Nine international character posters have been released for Snowpiercer, the English-language debut of Korean director Bong Joon-ho (The Host). The story is set in a new ice age caused by a failed experiment to stop global warming that killed virtually all life on the planet. The sole survivors live on a train called Snowpiercer—powered by a perpetual machine—who struggle with the class system implemented on the train. The posters all provide the first hint of a release date by listing “Summer 2013″. However, since these are international posters, we don’t know if that’s summer for the U.S., other countries, or both.